Model 8903B
SCHEMATIC SYMBOLOGY AND SCHEMATIC DIAGRAM NOTES
Service
8-30.
SCHEMATIC SYMBOLOGY AND SCHEMATIC DIAGRAM NOTES
Table
8-6
summarizes the symbology used in presenting many devices found in the instrument. The logic
symbols
used in this manual are based on
the
Institute of Electrical and Electronic Engineers (IEEE)
in
IEEE-
STD
9
1-1984,
Graphic
Synthdi
/br
Logic
FiincliorrJ.
This publication may be purchased from:
Institute
of
Electrical and Electronic Engineers Inc.
345 East 47th Street
New York,
NY
10017
Tuhlc
8-6.
Schcmaric
Diugrani
Noic.i
(I
of'
I
I)
Test points: symbols
are numbered for easy
correlation to schematic
diagrams, procedures.
and component location
PI
diagrams. Connection to
in
circuit signifies nu
Board
Board
Board measuring aid (metal in,
Assembly
Assembly Assembly
Post. circuit pad, Pi
desionation
name Dart number
etc.) Drovided. (X
SERIES
REGULATOR
01
7-
Circuit
functional
title.
designation
Socket
on A2
Non-plug-in
information.
Solder point
nunbered.
I
R1
2.5K
Interconnect
information;
Circled letter
with adjacent
number indicates
circuit-path
continuation to
another service
-in sheet
(3.
in
.nation; this example)
.
?r Look for same
:ates circled letter
If
socket on the indicated
I.
service sheet.
\
Signal
name and
destination.
ALC HIGH
XA2
TO
ALC
LOOP
Wire 'color code
Code used
is
the same
(MIL-STD-681)
as the resistor
color code.
First number
identifies the
Base color,
second number
the wider stripe.
and the third
number the
narrower stripe.
Example:
designations
I\
Reference
within outlined
assemblies are
abbreviated.
Full
designation includes
assemblv number:
I
Serial prefix of
instrument to
which schematic
directly applies.
\Large numbers
\
Connector symbols within
the borderlines of board in lower
assemblies signify right corners
of
connections to the assembly schematic diagrams
which are separate are service
from those made through sheet numbers.
the integral plug part
of the assembly.
\
for exainp~e. Asteri;k indicates factory
Rl
of
assembly selected components.
(See
A2
is
APRI. Section
SI.
Designations
of
*
other components Value selected for best operation.
denotes white base. are complete Value shown
is
average or most
yellow wide stripe. as shown.
violet narrow stripe.
commonly selected value.
8-2
1
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